Wear of corrugated roller

 Wear of corrugated roller

1、 The height of the flute teeth is lowered: because the "pressure roller" of the "upper  flute roller" exerts pressure on the lower flute roller, the pressure acts on the top of the UV shaped  flute for a long time, and the corrugated base paper continuously rubs with the top of the  flute teeth during the corrugated forming process, so that the top of the flute teeth is rapidly worn. If the flute tooth height is lower than the lower limit of the standard corrugation height due to wear, the rolled corrugation does not meet the standard.

2、 Flat head: because the three rollers extrude each other under pressure, especially the "pressure roller" extrudes the "lower flute roller", the top of the ridge changes from a sharp top to a flat top, resulting in an increase in the amount of glue coating and a longer "gelatinization" time, which can only be reduced to fully "gelatinize".

3、 Side by side: The "upper flute roller" is driven by the flute teeth of the "lower flute roller", so the circumferential force of the flute teeth always acts in one direction. The force bearing side of the flute teeth wears faster than the non force bearing side, causing the flute teeth to wear and deform side by side. The corrugating shape of the produced corrugated cardboard also falls side by side, affecting the strength and appearance.

4、 Grinding pit: During the forming process of flute roller teeth, there is relative sliding between the paper and the teeth. Because there are always sand particles or other hard impurities in the corrugated paper, this sliding makes the corrugated paper friction the teeth along the circumference like an abrasive belt. Over time, the surface of the flute roller teeth produces pitting abrasion, commonly known as grinding pit. The surface roughness of the ridge teeth is serious. The lower the quality of corrugated paper, the greater the chance of grinding pits. www.chinacartonmachine.com

5、 Medium and high wear: because full width paper is often not used on the corrugated cardboard production line, the abrasion of the middle section of the flute roll is faster than that of the two ends, resulting in the so-called medium and high wear. The flute roll with medium and high wear will break both ends of the corrugated core paper after the corrugated forming because the force on both ends is greater than the force in the middle when pressing the corrugated paper.